Don't have too much fun with this: https://en.wikipedia.org/wiki/EICAR_test_file
replyDo have way too much fun with EICAR:
replyhttps://www.youtube.com/watch?v=cIcbAMO6sxo
This guy put the EICAR test string into a barcode and started to scan it on various systems, with rather funny effects.